1 ho boi dang hinh hop chu nhat co cac kich thuoc trong long be la ; chieu dai 20m , rong 10m, sau 1,2 m . nguoi ta lat gach men xung quanh (ben trong )va day ho. nguoi ta dung loai gach men hinh vuong co1 canh 2dm de lat (khong ke cac mach vua ).Tinh
a) dien tich phan lat gach
b) tinh so gach can mua
mot ho boi dang HHCH co cac kich thuoc trong long ho la chieu dai 20m chieu rong 6,5 m va sau la 1,5 m .Nguoi ta lat gach men xung quanh (ben trong ) va day ho .Tinh dien tich phan lat gach ?
1 ho boi dang hhcn co cac kich thuoc ben trong long ho la CD 20m CD 10m va sau 1,2m nguoi ta lat xung quanh ben trong va day ho =nhung vien gach men HV co canh 2dm.Tinh
a)S phan lat gach.
b)tinh so vien gach can mua de lat
mot be boi dang hinh hop chu nhat co kich thuoc trong long be la chieu dai 24m,chieu rong 18m.Be dang chua 453,6m muc nuoc trong be len toi 3/4 chieu cao cua be
a,Hoi chieu cao cua be la bao nhieu m?
b hoi be boi do neu chua day nuoc thi duoc bao nhieu m khoi?
c de tan trang lai be boi nguoi ta lat gach men xung quanh thanh be cao den 1,2m .Hoi phai can bao nhieu vien gach men hinh vuong co canh 0,3m de lat?Biet rang dien tich phan mach vua (ho) khong dang ke
mot be boi dang hinh hop chu nhat co chieu dai 50m chieu rong 30m chieu cao 3m hoi can bao nhieu vien gach men hinh chu nhat co chieu rong 20cm va chieu dai 25cm de lat kin phan ben trong be boi noi tren biet rang dien tich cac mach vua khong dang ke
1 be boi dang hinh hop chu nhat co chieu dai 50m , chieu rong 30 m chieu cao 3m . hoi can bao nhieu vien gach men hinh chu nhat co chieu rong 20cm va chieu dai 25cm de lat kin phan ben trong be boi noi tren ? Biet rang dien tih cac mach vua khong dang ke
nguoi ta dung cac vien gach hinh vuong co canh 50cm de lat mot san choi hinh chu nhat co chieu dai 54m va chieu rong 42m biet dien tich cac mach vua khong dang ke so vien gach can dung
1 be boi co dang hinh hop chu nhat co kich thuoc mat trong la chieu dai 20m chieu rong 7m va chieu cao 1,2m nguoi ta muon lat kin cac mat xung quanh va mat day ben trong cua be boi bang mot loai gach men trang hinh vuong canh 20cm vay can ....? gach men nhu the
GIUP MK VOI MK DANG GAP LAM NEN CHI CAM ON DC THOI
mot nen nha hinh chu nhat co chieu dai 9m, chieu rong bang 2/3 chieu dai. nguoi ta lat nen nha bang cac vien gach hinh vuong canh 3 dm. moi vien gach gia 12000 dong. tinh so tien mua gach de lat ca nen nha do. [dien tich phan gach vua ko dang ke].